timetable, does it play out immediately or is it something that shows outpatient months later? >> no, it often shows up very early. that was a very important point because if you notice it early, that's pretty normal for both adults and children alike. if it turns into nightmares, anxiety or loss of sleep, that's when usually it's time to try and maybe get some help. we talked about this a little bit last night, anderson. but if you look at the study specifically on sleep, it's compelling stuff. if somebody gets good sleep, good quality sleep, you can predict much more accurately how well they're going to be able to cope in the long run. and that sleep in the first few nights, last night, tonight, parents watching their child's sleep patterns tonight is really important. >> definitely fascinating. something we talked about a couple of hours ago, i think it bears repeating because i think it has concerned a lot of parents, parents whose kids are on the spectrum of autism or have asperger's.